Everytime Dev-team releases an upgrade for JB/unlock many people jubilate but other people groan due to poor performance of the upgrade on their iDevice and once the upgrade is made there is no turning back - sort of like what Crapple does

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After upgrading to ultrasn0w 1.1-1 have noticed an increased battery drain compared to 1.0-1 when using apps - standby mode is good but actual usage is very bad compared to 1.0-1 in my case/experience (3GS)
Wanted to downgrade to 1.0-1 via Sinful repo (as this isnt possible via repo 666.ultrasn0w.com) but unfortunately the repo was down on Cydia all yesterday and when it finally was up again ultrasn0w had been upgraded to 1.1-1

Have found ultrasn0w 0.93 as DEB file with attached Mobilesubstrate_0.9.3087-1_iphoneos-arm.deb.
Sofar unable to located 1.0-1 & 1.1-1 as DEB file with attached Mobilesubstrate files.
Would like to have ultrasn0w as DEB file with attached Mobilesubstrates just in case Cydia or the various repos are down when needed but mostly for testing inorder to find out which one is best for my 3GS (appreantly no 2 iPhones are the same???).
My questions are:
1. what is the difference between ultrasn0w 0.93, 1.0-1 & 1.1-1?
2. where does one find the DEB/Mobilesubstrate files for 1.0-1 & 1.1-1?
3. what is people's experience of the 3 'different' ultrasn0ws?